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Added video boundary checks for the blitter

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This commit is contained in:
Angelo Salese 2010-01-14 22:20:19 +00:00
parent 1ceb85b680
commit 3fb01925f6
1 changed files with 10 additions and 2 deletions
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12
src/mame/drivers/cybertnk.c
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@ -7,9 +7,15 @@ preliminary driver by Angelo Salese
Maybe it has some correlation with WEC Le Mans HW? (supposely that was originally done by Coreland too)
TODO:
- blitter (very likely that it can do zooming);
- road emulation;
- tilemap video registers;
- color banking for the tilemaps;
- ROM "SS5" is missing? Or it's a sound chip that's labelled SS5?
- dual screen output.
============================================================================================
(note: the following notes are from "PS")
- Communications
Master slave comms looks like shared RAM.
@ -285,7 +291,8 @@ static VIDEO_UPDATE( cybertnk )
if(dot != 0) // transparent pen
{
dot|= col_bank<<4;
*BITMAP_ADDR16(bitmap, y+yi, x+x_dec+xi) = screen->machine->pens[dot];
if(((x+x_dec+xi) < video_screen_get_visible_area(screen)->max_x) && ((y+yi) < video_screen_get_visible_area(screen)->max_y))
*BITMAP_ADDR16(bitmap, y+yi, x+x_dec+xi) = screen->machine->pens[dot];
}
shift_pen -= 8;
x_dec++;
@ -300,7 +307,8 @@ static VIDEO_UPDATE( cybertnk )
if(dot != 0) // transparent pen
{
dot|= col_bank<<4;
*BITMAP_ADDR16(bitmap, y+yi, x+x_dec+xi) = screen->machine->pens[dot];
if(((x+x_dec+xi) < video_screen_get_visible_area(screen)->max_x) && ((y+yi) < video_screen_get_visible_area(screen)->max_y))
*BITMAP_ADDR16(bitmap, y+yi, x+x_dec+xi) = screen->machine->pens[dot];
}
shift_pen -= 8;
x_dec++;